const int pingPin = 7; // Trigger Pin of Ultrasonic Sensor
const int echoPin = 6; // Echo Pin of Ultrasonic Sensor
void setup() {
Serial.begin(9600); // Starting Serial Terminal
}
void loop() {
long duration, inches, cm; pinMode(pingPin,
OUTPUT); digitalWrite(pingPin, LOW);
delayMicroseconds(2); digitalWrite(pingPin,
HIGH); delayMicroseconds(10);
digitalWrite(pingPin, LOW);
pinMode(echoPin, INPUT); duration =
pulseIn(echoPin, HIGH); inches =
microsecondsToInches(duration); cm =
microsecondsToCentimeters(duration);
Serial.print(inches);
Serial.print("in, ");
Serial.print(cm);
Serial.print("cm");
Serial.println();
delay(100);
}
long microsecondsToInches(long microseconds) {
return microseconds / 74 / 2;
}
long microsecondsToCentimeters(long microseconds) {
return microseconds / 29 / 2;
}